https://bugs.llvm.org/show_bug.cgi?id=50500
Sanjay Patel <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Fixed By Commit(s)| |7bb8bfa0622b
Resolution|--- |FIXED
--- Comment #2 from Sanjay Patel <[email protected]> ---
As with bug 49832, it's more general than partial undef - we don't account for
vector transforms in our equivalence substituation logic:
https://reviews.llvm.org/rG7bb8bfa0622b
I audited callers and don't see any other places we could hit this, so I put an
assert in the simplify code.
If we want this kind of transform for vectors, we might try to handle splats
only, but I don't see any evidence for it.
I think this bug was completely hidden before D101191, so it doesn't affect
release branches, but feel free to reopen if that's not right.
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